Flat wire automatic coil changing and cutting device

Abstract

The present invention discloses an automatic flat wire coil-changing and cutting device, which includes a turntable frame and a wire winding mechanism. The wire winding mechanism includes a rotatable turntable, a turntable shaft connected to the turntable, and two rotatable wire winding shafts symmetrically installed on the turntable with respect to the turntable shaft on the left and right. A wire winding connecting shaft is connected to the front end of the wire winding shaft, and the wire winding connecting shaft is for installing a coil. Pallets are provided on both wire winding shafts, and the coil is located on the front side of the pallet. A wire catcher is provided on the edge of the pallet. A wire blocking rod is provided beside each pallet, and the wire blocking rod is fixed to the turntable. A wire blocking roller is provided on the side of the wire blocking rod away from the pallet. In the height position, the positions of the two wire blocking rollers are respectively higher or lower than the edge of the coil. A cutting mechanism and a blocking rod are provided between the wire blocking roller and the side of the pallet without the wire blocking rod. One end of the blocking rod is installed on the turntable through a blocking rod cylinder and can be lifted and lowered. The present invention has a high coil-changing efficiency, orderly traction during coil-changing, can accurately catch the wire, the starting section position of the flat wire winding is reasonable, making the flat wire winding flat, and the flat wire cutting is effective and fast.

Description

Technical Field

[0001] The present invention relates to enamelled wire manufacturing equipment, and more particularly to an automatic bobbin changing and cutting device for flat wire manufacturing. Background Art

[0002] An enamelled wire is composed of an inner conductor and a coating wrapping the conductor. After processes such as annealing, painting, baking, and cooling, the baked enamelled wire needs to be arranged on a bobbin by a take-up machine. In the take-up machine, the enamelled wire is cooperated with a rotating bobbin through a wire arranging guide wheel. The bobbin is fixed in the take-up machine, and the rotation of the take-up machine drives the bobbin to rotate, so as to wind the enamelled wire led out by the wire arranging guide wheel on the bobbin.

[0003] Most of the existing take-up machines are used for winding enamelled wire with a circular cross-section. For the winding of flat wire, simple winding equipment and manual operation are basically adopted, and the degree of automation is very low. In particular, after the bobbin is full, the switching between the full bobbin and the empty bobbin cannot be realized automatically. The full bobbin needs to be stopped, the flat wire is cut, the empty bobbin is installed, and then the wire head is fixed again, and then the winding starts, resulting in low bobbin changing efficiency.

[0004] Due to its own characteristics, flat wire is different from round wire. Flat wire has a certain width and thickness, and the automatic bobbin changing and cutting methods of round wire cannot be fully applied. According to the cutting principle of round wire, the pulling force of the wire head pulled by the rotating bobbin contacts the edge of the blade to realize wire breaking. However, for flat wire with a larger thickness or width, manual wire breaking is required. When changing the bobbin, due to the width of the flat wire, problems such as flipping during pulling or missing the wire are likely to occur. When the wire head is fixed on the empty bobbin, due to the problem of the starting section of the wire head, every time it reaches the position of the starting section of the flat wire during winding, it will protrude more than other positions, resulting in an uneven situation. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides an automatic bobbin changing and cutting device for flat wire, which has high bobbin changing efficiency, orderly traction during bobbin changing, can accurately catch the wire, has a reasonable starting section position for flat wire winding, makes the flat wire winding flat, and effectively and quickly cuts the flat wire.

[0006] According to an aspect of the present invention, there is provided a flat wire automatic coil-changing and cutting device, which includes a turntable frame and a wire winding mechanism. The wire winding mechanism includes a rotatable turntable, a turntable shaft connected to the turntable, and two rotatable wire winding shafts symmetrically installed on the turntable with respect to the turntable shaft on the left and right sides. The left and right sides of the turntable shaft are respectively referred to as the full coil working position and the wire winding working position. The front end of the wire winding shaft is connected with a wire winding connecting shaft, and the wire winding connecting shaft is horizontally arranged relative to the horizontal plane. The wire winding connecting shaft is for installing a coil. There are trays on both groups of wire winding shafts. The coil is located on the front side of the tray. A wire catcher is provided on the edge of the tray. A wire blocking rod is provided beside each tray. The wire blocking rod is fixed to the turntable. A wire blocking roller is provided on the side of the wire blocking rod away from the tray. In terms of height position, the positions of the two groups of wire blocking rollers are respectively higher or lower than the edge of the coil. A cutting mechanism and a blocking rod are provided between the wire blocking roller and the side of the tray without the wire blocking rod. One end of the blocking rod is installed on the turntable through a blocking rod cylinder and can be lifted and lowered;

[0007] During coil changing, the turntable rotates. After the wire is wound, the full coil is rotated to the full coil working position, and the empty coil to be wound is rotated to the wire winding working position. The flat wire is pulled to the lower side of the wire blocking roller beside the full coil. The blocking rod is pressed down, and the flat wire is pressed to the inner edge of the empty coil. After the wire catcher on the wire winding working position rotates to catch the wire, the flat wire is pushed into the cutting mechanism for cutting.

[0008] Thus, during wire winding, the coil rotates clockwise. Before coil changing, the empty coil is pre-installed on the wire winding connecting shaft at the full coil working position. The turntable rotates clockwise to adjust the positions of the full coil and the empty coil. The full coil is rotated to the full coil working position, and the empty coil is rotated to the wire winding working position. At the same time, the continuously conveyed flat wire is pulled to the full coil working position along with the full coil. The flat wire bypasses the lower side of the wire blocking roller beside the full coil (i.e., the wire blocking roller under the turntable). The blocking rod cylinder is in the extended state, the blocking rod is above the flat wire and the flat wire is outside the cutting mechanism. Then, the blocking rod cylinder drives the blocking rod to press down the flat wire. The flat wire is pressed to the inner edge of the empty coil close to the coil. The empty coil and the tray rotate, so that the wire catcher at the wire winding working position hooks the flat wire. After the wire catcher hooks the flat wire, it continues to rotate, and the flat wire enters the cutting mechanism to complete cutting. Without stopping the wire winding, the positions of the empty coil and the full coil are interchanged by rotating the turntable. During the interchange of their positions, the conveying direction of the flat wire remains unchanged, and it is simply pulled along with the full coil, and it is not easy to turn over. The wire blocking roller and the conveying end of the flat wire form a straight line segment. The straight line segment forms an angle of about 90° with the blocking rod. After the flat wire is mechanically pressed down by the blocking rod to the set position, the tray with a wire catcher rotates to catch the wire. The side where the full coil is located uses the wire blocking rod to block the flat wire to prevent the wire catcher at the full coil working position from catching the wire, ensuring accurate wire catching. The flat wire automatic coil-changing and cutting device has a high coil-changing efficiency. Before coil changing, the empty coil is installed in advance. After coil changing, the full coil is processed. It does not affect the normal continuous wire winding and improves the work efficiency.

[0009] In some embodiments, the end surface of the reel close to the turntable is provided with an introduction groove, and when the blocking lever is pressed down, the flat wire is pressed into the introduction groove of the empty reel. As a result, the flat wire is pressed into the introduction groove of the empty reel, and the position of the starting section of the flat wire is further moved inward, thereby improving the accuracy of wire capture. In addition, the introduction groove is provided, and the starting section of the flat wire is located in the introduction groove, so that the flat wire starts from the introduction groove and is gradually and orderly wound up on the reel of the reel, so that the starting section of the flat wire fits the reel, thereby avoiding the situation that each time the starting section of the flat wire is located, it will bulge out more than other positions, resulting in unevenness.

[0010] In some embodiments, the entrance direction of the introduction slot is inclined, and the diameter at the entrance is slightly wider than the diameter near the reel. Therefore, the inlet direction is inclined, mainly to match the direction of the straightened line segment formed by the wire blocking roller and the flat wire conveying end after the flat wire is pulled after the reel is changed, so that the flat wire is pressed into the introduction slot. The diameter near the reel is small, which is conducive to the flat wire being more tightly wound at the root of the end surface of the reel.

[0011] In some embodiments, the cutting mechanism includes a knife seat, a cutting cylinder and a tangent blade. The knife seat is fixed with a knife side plate. The tangent blade can be rotatably mounted on the knife side plate. The rear end of the tangent blade is hinged with the piston rod of the cutting cylinder. The cutting cylinder is mounted on the knife seat. A blade is provided on the front side of the blade side plate. A cutting edge is formed between the front part of the tangent blade and the blade. The cutting cylinder drives the front end of the tangent blade to press down and the cutting edge closes to cut the flat wire. Thus, when the flat wire reaches the cutting edge, the cutting cylinder extends to drive the rear end of the tangent blade to lift upward. The tangent blade rotates and the front end of the tangent blade presses downward. The cutting edge closes to cut the flat wire. The cutting cylinder applies an external force to cut the flat wire, thereby increasing the force during cutting. Compared with the traditional method of pulling and hitting the blade to break the wire, it is more reliable. Moreover, this structure is also suitable for flat wires with larger sizes.

[0012] In some embodiments, a guide plate is provided on one side of the cutting blade, the guide plate is mounted on the blade holder, and the front bottom of the guide plate is tilted. Therefore, after the wire is hooked, the wire catcher rotates to push the flat wire under the guide plate, and smoothly guides it under the cutting blade along the oblique edge of the front end of the guide plate, ensuring that the flat wire can accurately reach the blade position.

[0013] In some embodiments, the cutting edge formed between the cutting blade and the blade is an oblique cutting edge, which is gradually inclined upward from the front end of the cutting blade to the rear, and the blade is a replaceable blade. Therefore, if the blade is worn, it can be replaced to reduce costs, and the oblique cutting edge can be changed to flip the flat wire, so that the force required for cutting can be reduced, which is conducive to cutting.

[0014] In some embodiments, a travel switch is provided on the tool holder. The travel switch is provided with a contact rod, and the contact rod is upward and located between the guide plate and the tangent tool plate. Thus, before the flat wire is brought into the cutting mechanism by the wire catcher, the flat wire is perpendicular to the turntable. When it touches the front inclined surfaces of the guide plate and the tangent tool plate, it gradually tilts. Then, before the flat wire enters the cutting edge from the guide plate, it first touches the contact rod. The flat wire pushes the contact rod, and the contact rod rotates backward. As the contact rod rotates, the flat wire flips along the inclined cutting edge. After the contact rod rotates in place, the cutting cylinder is triggered to start.

[0015] In some embodiments, the wire blocking roller is vertically installed on the turntable through a central shaft. One side of the wire blocking roller close to the turntable is a cylindrical section, and the other side away from the turntable is a conical section. The cylindrical section and the conical section are provided with a cylindrical transition section. The outer diameter of the cylindrical transition section is smaller than that of the cylindrical section, and the width of the cylindrical transition section is slightly larger than the width of the flat wire. Thus, during the process of changing the coil, the position of the conveying end of the flat wire wound on the full coil tool is still changing. The conical section is beneficial for the flat wire to smoothly slide into the cylindrical transition section after changing the coil and also avoids the flat wire from shifting in the opposite direction. The outer diameter of the cylindrical section is slightly larger, which can prevent the flat wire from moving excessively.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The automatic flat wire coil-changing and cutting device provided by the present invention realizes the automatic coil-changing and cutting of the flat wire. It sets a wire-receiving working position and a full-coil working position. Before changing the coil, an empty coil tool is installed in advance. After changing the coil, the full coil tool is processed. It does not affect the normal continuous wire receiving, and the coil-changing efficiency is high. Without stopping the winding, the positions of the empty coil tool and the full coil tool are interchanged by rotating the turntable. During the process of interchanging their positions, the conveying direction of the flat wire remains unchanged, and it is simply pulled along with the full coil tool, and the pulling is smooth and it is not easy to turn over; the straight wire segment formed after pulling forms an angle of about 90° with the stop rod and the cutting knife. Before catching the wire, the flat wire is mechanically pressed into the guiding groove of the tool, which improves the success rate of catching the wire and reasonably handles the problem of the wire head, avoiding the problem of uneven wire receiving caused by the position of the wire head; after catching the wire, the wire catcher rotates and pushes the flat wire under the guide plate, slides along the guide plate and under the tangent tool plate, and the flat wire flips along the inclined cutting edge. The tangent tool plate is driven by the cutting cylinder to cut the flat wire. By applying an external force through the cutting cylinder to cut the flat wire, the acting force during cutting is increased. Compared with the traditional method of breaking the wire by pulling and touching the cutting edge, it is more reliable, and this structure is also suitable for flat wires with larger sizes. In addition, the inclined cutting edge changes the direction of the flat wire and makes the flat wire flip, so that the force required for cutting can be reduced, which is more conducive to cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an embodiment of the automatic flat wire coil-changing and cutting device of the present invention;

[0018] Figure 2 isFigure 1 Top view;

[0019] Figure 3 is Figure 1 Front view;

[0020] Figure 4 Schematic diagram of the installation of the turntable shaft;

[0021] Figure 5 Schematic diagram of the distribution of the base plate, linear guide slider assembly, wire take-up displacement motor and lead screw nut assembly;

[0022] Figure 6 Schematic diagram of the structure of the turntable installed on the turntable bearing seat;

[0023] Figure 7 is Figure 6 Front view;

[0024] Figure 8 is Figure 6 Top view;

[0025] Figure 9 Schematic diagram of the connection between the wire take-up shaft and the wire take-up connecting shaft;

[0026] Figure 10 Stereogram of the cutting mechanism, with the cutting edge in the open state at this time;

[0027] Figure 11 is Figure 10 Stereogram from another perspective;

[0028] Figure 12 is Figure 10 Front view;

[0029] Figure 13 is Figure 10 Side view;

[0030] Figure 14 Schematic diagram of the cutting mechanism with the cutting edge in the closed state;

[0031] Figure 15 Schematic diagram of the running direction of the flat wire during normal wire take-up at the wire take-up working position;

[0032] Figure 16 Schematic diagram of the running direction of the flat wire after the full spool and the empty spool are swapped during spool change. Specific implementation manners

[0033] The present invention will be further described below in conjunction with specific implementation manners.

[0034] Such as Figures 1 to 4As shown in the figure, the flat wire automatic coil-changing and cutting device of an embodiment of the present invention includes a turntable frame 1 and a wire winding mechanism. The wire winding mechanism is a horizontal wire winding mechanism. The wire winding mechanism includes a rotatable turntable 3, a turntable shaft 31, and two groups of rotatable wire winding shafts 32. The turntable 3 is located on the front side of the turntable frame 1. The turntable 3 is of a circular structure. The turntable shaft 31 is installed at the center of the turntable 3. The turntable shaft 31 is fixed to the turntable 3 by screws. A turntable bearing seat frame 311 is sleeved on the turntable shaft 31. The turntable bearing seat frame 311 and the turntable shaft 31 are connected by a bearing sleeve 312 and a bearing seat cover 313. The turntable shaft 31 can rotate relative to the turntable bearing seat frame 311. A turntable large gear 314 is installed on the turntable shaft 31. The turntable large gear 314 meshes with a turntable small gear 315. The turntable small gear 315 is connected to a turntable reduction motor 316. As Figure 8 and 9 shown, the two groups of wire winding shafts 32 are symmetric about the turntable shaft 31 left and right. A wire winding bearing seat 322 is sleeved on the wire winding shaft 32. The wire winding bearing seat 322 and the wire winding shaft 32 are quietly connected by a bearing 323 and a wire winding bearing seat cover 324. The wire winding bearing seat 322 is installed on the turntable 3. The wire winding shaft 32 can rotate relative to the turntable 3. A wire winding large gear 33 is installed at the end of the wire winding shaft 32. The wire winding large gear 33 meshes with a wire winding small gear 331. The wire winding small gear 331 is connected to a wire winding reduction motor 332. The front end of the wire winding shaft 32 is connected to a wire winding connecting shaft 321. The wire winding connecting shaft 321 is horizontally arranged relative to the horizontal plane. The wire winding connecting shaft 321 is for installing a coil 100. Pallets 4 are installed on both of the two wire winding shafts 32. The coil 100 is sleeved on the wire winding shaft 32. The coil 100 is located in front of the pallet 4. And one end face of the coil 100 is close to the pallet 4. The other end of the coil 100 is fixed by a center point 325 and a center point sleeve 326 and locked by a nut 327. The turntable bearing seat frame 311 can be arranged to move back and forth. During the wire winding process, it is equivalent to the coil 100 moving back and forth, which can avoid the flat wire stacking at a certain place on the coil 100.

[0035] The installation structure for the turntable bearing seat frame 311 to move back and forth is as Figure 4 and 5 shown: The bottom of the turntable bearing seat frame 311 is fixedly connected by screws to a sliding seat 21. A bottom plate 2 is provided below the turntable frame 1. The sliding seat 21 is installed on the bottom plate 2 through a linear guide rail slider assembly 22. A wire winding displacement motor 23 is installed on the bottom plate 2. A lead screw nut assembly 24 is installed at the bottom of the sliding seat 21. The wire winding displacement motor 23 and the lead screw nut assembly 24 are driven through a synchronous belt 25 and a pulley. The wire winding displacement motor 23 drives the lead screw nut assembly 24 to rotate, thereby driving the sliding seat 21 to move back and forth. The turntable bearing seat frame 311 and the turntable frame 1 connected to the sliding seat 21 move back and forth as a whole, which is equivalent to the coil 100 moving back and forth.

[0036] AsFigure 3 As shown, the left and right sides of the turntable shaft 31 are respectively called the full-disk working position A and the wire-receiving working position B. The wire-receiving working position B is used for wire-receiving of the empty spool 100, and the full-disk working position A is used for subsequent processing of the spool 100 after winding, such as loading and unloading the full spool 100 and installing the empty spool 100, ensuring the continuous and effective operation of the flat wire fully automatic wire-receiving machine, avoiding waste of wire segments during spool change, and also improving the efficiency of spool change.

[0037] As Figure 6 and 7 As shown, a wire catcher 41 is fixedly installed on the edge of each tray 4, and a wire blocking rod 5 is provided beside each tray 4. The main body of the wire blocking rod 5 is an arc section. The two ends of the wire blocking rod 5 are fixedly installed on the turntable 3. The wire blocking rod 5 is close to the edge of the tray 4. The main function of the wire blocking rod 5 is that when changing the spool between the empty spool 100 and the full spool 100, on the full-disk working position A, when the full spool 100 rotates, since the wire blocking rod 5 blocks the pulled flat wire segment, the wire catcher 41 on this side of the tray 4 will not catch the flat wire. A wire blocking roller 6 is provided on the side of the wire blocking rod 5 away from the tray 4. In terms of height position, the positions of the two groups of wire blocking rollers 6 are respectively higher or lower than the edge of the spool 100, that is, when the turntable 3 rotates into place, the upper wire blocking roller 6 is higher than the upper edge position of the spool 100, and the lower wire blocking roller 6 is lower than the lower edge position of the spool 100. This facilitates lifting the flat wire during spool change and facilitates the automated operations of wire catching and cutting. A cutting mechanism 8 and a blocking rod 7 are arranged between the wire blocking roller 6 and the side of the tray 4 where the wire blocking rod 5 is not provided. The blocking rod 7 is located between the cutting mechanism 8 and the wire blocking roller 6. The turntable 3 is equipped with a blocking rod cylinder 71, and one end of the blocking rod 7 is installed on the piston rod of the blocking rod cylinder 71. By using the blocking rod cylinder 71, the position of the blocking rod 7 can be lifted, that is, the position of the blocking rod 7 can be moved relative to the surface of the turntable 3. During spool change, the blocking rod 7 can be used to press the flat wire inward.

[0038] As Figure 6 As shown, the wire blocking roller 6 is vertically installed on the turntable 3 through a central shaft 60, and the wire blocking roller 6 can rotate around the central shaft 60. The side of the wire blocking roller 6 close to the turntable 3 is a cylindrical section 63, and the side of the wire blocking roller 6 away from the turntable 3 is a conical section 61. A cylindrical transition section 62 is provided between the cylindrical section 63 and the conical section 61. The outer diameter size of the cylindrical transition section 62 is smaller than the outer diameter size of the cylindrical section 63, and the width of the cylindrical transition section 62 is slightly larger than the width of the flat wire. In this way, during the spool change process, the position of the conveying end of the flat wire wound on the full spool 100 is still changing. The conical section 61 is beneficial for the flat wire to smoothly slide into the cylindrical transition section 62 after spool change and also avoids the flat wire from shifting in the opposite direction. The outer diameter of the cylindrical section 63 is slightly larger, which can prevent the flat wire from moving excessively.

[0039] When changing the coil, the turntable 3 rotates, the full coil spool 100 after wire winding rotates to the full coil working position A, and the empty coil spool 100 to be wire wound rotates to the wire winding working position B. As the position of the spool 100 changes, the continuously conveyed flat wire is pulled to the full coil working position A by the full coil spool 100. The flat wire is pulled to the lower part of the wire retaining roller 6 beside the full coil spool 100. The retaining rod 7 presses down, and the flat wire is pressed against the inner side edge of the empty coil spool 100. After the wire catcher 41 at the wire winding working position B rotates to catch the wire, the flat wire is pushed into the cutting mechanism 8 for cutting.

[0040] As Figure 15 and 16 shown, the wire guiding wheel part for introducing the flat wire is added to the figure to guide the flat wire onto the spool 100. When winding the wire, the spool 100 rotates clockwise. Before changing the coil, the empty coil spool 100 is pre-installed on the wire winding connecting shaft 321 at the full coil working position A. The turntable 3 rotates clockwise to adjust the positions of the full coil spool 100 and the empty coil spool 100. The full coil spool 100 rotates to the full coil working position A, and the empty coil spool 100 to be wire wound rotates to the wire winding working position B. At the same time, the continuously conveyed flat wire is pulled to the full coil working position A by the full coil spool 100. The flat wire passes under the wire retaining roller 6 (i.e., the wire retaining roller 6 located under the turntable 3 after rotation) beside the full coil spool 100. The retaining rod cylinder 71 is in the extended state, the retaining rod 7 is above the flat wire and the flat wire is outside the cutting mechanism 8. Then, the retaining rod cylinder 71 drives the retaining rod 7 to press the flat wire towards the side where the turntable 3 is located. The flat wire is pressed against the inner side edge of the empty coil spool 100 near the spool 100. The empty coil spool 100 and the tray 4 rotate, so that the wire catcher 41 at the wire winding working position B hooks the flat wire. After the wire catcher 41 hooks the flat wire, it continues to rotate, and the flat wire is pushed into the cutting mechanism 8 to complete the cutting.

[0041] As Figure 6 shown, the spool 100 has a cylindrical reel 102 in the middle, with end faces at both ends. The end faces are circular, similar to an I-shaped structure. The spool 100 is provided with an inlet groove 101 on the end face close to the turntable 3. When the retaining rod 7 presses down, the flat wire is pressed into the inlet groove 101 of the empty coil spool 100. The inlet direction of the inlet groove 101 is inclined, and the caliber at the inlet is slightly wider than that near the spool 102 of the spool.

[0042] The flat wire is pressed into the introduction slot 101 of the empty reel 100, and the position of the starting section of the flat wire is further moved inward, thereby improving the accuracy of wire capture. The introduction slot 101 is provided, and the starting section of the flat wire is located in the introduction slot 101, so that the flat wire starts from the introduction slot 101 and is gradually and orderly wound and arranged on the reel 102 of the reel 100, so that the starting section of the flat wire fits the reel 100, and avoids protruding from other positions every time the starting section of the flat wire is reached, resulting in unevenness. The entrance direction of the introduction slot 101 is inclined, mainly to cooperate with the direction of the straightened line segment formed by the wire blocking roller 6 and the flat wire conveying end after the flat wire is pulled after the reel is changed, so as to facilitate the flat wire to be pressed into the introduction slot 101, and the small diameter near the reel 102 is conducive to the flat wire being more tightly wound at the root of the end surface of the reel 100.

[0043] like Figures 10 to 14 As shown, the cutting mechanism 8 includes a knife seat 83, a cutting cylinder 82 and a cutting blade 81. The knife seat 83 is mounted on the turntable 3 by screws, and a knife side plate 84 is fixedly mounted on the knife seat 83 by screws. The cutting blade 81 can be rotatably mounted on the knife side plate 84. The rear end of the cutting blade 81 is hinged with the piston rod of the cutting cylinder 82, and the cylinder body of the cutting cylinder 82 is mounted on the knife seat 83. A blade 841 is provided on the front side of the cutting blade 84. The blade 841 is a replaceable blade, and the replaceable blade 841 can be locked to the knife side plate 84 by screws. A knife edge 80 is formed between the front part of the cutting blade 81 and the blade 841. The cutting cylinder 82 drives the front end of the cutting blade 81 to press down, and the knife edge 80 is closed to cut the flat wire. The knife edge 80 formed between the cutting blade 81 and the blade 841 is an oblique knife edge, and the knife edge 80 is gradually inclined upward from the front end of the cutting blade 81 to the rear.

[0044] A guide plate 85 is installed on one side of the thread cutting blade 81 through a side plate 86 and screws, so that the guide plate 85 is fixed to the blade seat 83, and the front bottom of the guide plate 85 is inclined. When the wire catcher 41 rotates after hooking the wire, the flat wire is pushed under the guide plate 85, and smoothly guided to the bottom of the thread cutting blade 81 along the bevel 851 at the front end of the guide plate 85, so that the auxiliary flat wire can accurately reach the position of the blade 80.

[0045] A travel switch 87 is also installed at the front end of the knife seat 83. The travel switch 87 is equipped with a touch rod 88. The touch rod 88 is upward and located between the guide plate 85 and the cutting knife plate 81. One end of the touch rod 88 is installed on the travel switch 87, and the touch rod 88 can rotate around the connection.

[0046] After the full spool 100 and the empty spool 100 are changed, before the flat wire is pushed by the wire catcher 41 to the cutting mechanism 8, the flat wire is perpendicular to the turntable 3. When it touches the front inclined surfaces of the guide plate 85 and the tangent knife plate 81, it gradually tilts. Then, before the flat wire enters in front of the cutting edge 80 from the guide plate 85, it first touches the contact rod 88. The flat wire pushes the contact rod 88, and the contact rod 88 rotates backward. As the contact rod 88 rotates, the flat wire flips along the inclined cutting edge. After the contact rod 88 rotates in place, it triggers the cutting cylinder 82 to start. The cutting cylinder 82 extends to drive the rear end of the tangent knife plate 81 to lift upward. The tangent knife plate 81 rotates, the front end of the tangent knife plate 81 presses downward, and the cutting edge 80 closes to cut the flat wire. By applying an external force through the cutting cylinder 82 to cut the flat wire, the acting force during cutting is increased, which is more reliable than the traditional method of pulling and hitting the cutting edge to break the wire, and this structure is also suitable for flat wires with larger sizes. The inclined cutting edge changes the direction of the flat wire and makes the flat wire flip, so that the force required for cutting can be reduced, which is beneficial to cutting. In addition, if the cutting edge 841 is worn, it can be replaced to reduce costs.

[0047] The automatic flat wire spool-changing and cutting device provided by the present invention realizes the automatic spool-changing and cutting of flat wires. The wire winding working position B and the full spool working position A are set. Before spool-changing, the empty spool 100 is installed in advance. After spool-changing, the full spool 100 is processed. It does not affect the normal continuous wire winding, and the spool-changing efficiency is high. Without stopping the winding, the positions of the empty spool 100 and the full spool 100 are interchanged by rotating the turntable 3. During the process of interchanging their positions, the conveying direction of the flat wire remains unchanged, and it is simply pulled along with the full spool 100, and the pulling is smooth and it is not easy to turn over. After spool-changing, the flat wire is pulled, and the wire retaining roller 6 and the flat wire conveying end form a straight line segment. The straight line segment forms an angle of about 90° with the retaining rod 7 and the cutting knife ( Figure 16 as shown). Before catching the wire, the flat wire is mechanically pressed into the guiding groove 101 of the spool 100, and then the tray 4 with the wire catcher 41 rotates to catch the wire, which improves the wire-catching success rate and reasonably handles the wire head problem, avoiding the problem of uneven wire winding caused by the position of the wire head. After catching the wire, the wire catcher 41 rotates to push the flat wire under the guide plate 85 and slides into the lower part of the tangent knife plate 81 along the guide plate 85. The flat wire flips along the inclined cutting edge, reducing the force required for cutting. The cutting cylinder 82 is used to drive the tangent knife plate 81 to cut the flat wire. By applying an external force through the cutting cylinder 82 to cut the flat wire, the acting force during cutting is increased, which is more reliable than the traditional method of pulling and hitting the cutting edge to break the wire, and this structure is also suitable for flat wires with larger sizes.

[0048] The above are only some embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the creative concept of the present invention, other deformations and improvements can also be made, and these all belong to the protection scope of the present invention.

Claims

1. Automatic flat wire coil-changing and cutting device, comprising a turntable frame and a wire winding mechanism, characterized in that, The wire take-up mechanism includes a rotatable turntable, a turntable shaft connected to the turntable, and two rotatable wire take-up shafts symmetrically installed on the turntable with respect to the turntable shaft on the left and right. The left and right sides of the turntable shaft are respectively referred to as the full-wind working position and the wire take-up working position. The front end of the wire take-up shaft is connected with a wire take-up connecting shaft, and the wire take-up connecting shaft is horizontally arranged with respect to the horizontal plane. The wire take-up connecting shaft is for installing a coil. There are trays on both of the two wire take-up shafts. The coil is located in front of the tray. A wire catcher is provided on the edge of the tray. A wire blocking rod is provided beside each tray. The wire blocking rod is fixed to the turntable. A wire blocking roller is provided on the side of the wire blocking rod away from the tray. In terms of height position, the positions of the two wire blocking rollers are respectively higher or lower than the edge of the coil. A cutting mechanism and a blocking rod are provided between the wire blocking roller and the side of the tray without the wire blocking rod. One end of the blocking rod is installed on the turntable through a blocking rod cylinder and can be lifted and lowered; An inlet groove is provided on the end face of the coil close to the turntable. The inlet direction of the inlet groove is inclined, and the caliber at the inlet is slightly wider than the caliber near the coil reel; When changing the coil, the turntable rotates. The full-wind coil after wire take-up rotates to the full-wind working position, and the empty coil to be wire taken-up rotates to the wire take-up working position. The flat wire is pulled to the lower part of the wire blocking roller beside the full-wind coil. After the flat wire is pulled, a straight line segment is formed between the wire blocking roller and the flat wire conveying end. The blocking rod presses down to press the flat wire into the inlet groove of the empty coil. After the wire catcher on the wire take-up working position rotates to catch the wire, the flat wire is pushed into the cutting mechanism to be cut off; The cutting mechanism includes a knife seat, a cutting cylinder, and a tangent knife plate. The knife seat is fixed with a knife side plate. The tangent knife plate is rotatably installed on the knife side plate. The rear end of the tangent knife plate is hinged to the piston rod of the cutting cylinder. The cutting cylinder is installed on the knife seat. A cutting edge is provided on the front side of the knife side plate. A cutting edge opening is formed between the front part of the tangent knife plate and the cutting edge. A guide plate is provided on one side of the tangent knife plate. The guide plate is installed on the knife seat. The bottom of the front end of the guide plate is inclined. The cutting cylinder drives the front end of the tangent knife plate to press down, and the cutting edge opening closes to cut off the flat wire.

2. The flat wire automatic coil changing and cutting device according to claim 1, wherein The cutting edge opening formed between the tangent knife plate and the cutting edge is an inclined cutting edge opening. The cutting edge opening is gradually inclined upward from the front end of the tangent knife plate to the rear. The cutting edge is a replaceable cutting edge.

3. The flat wire automatic coil changing and cutting device according to claim 2, characterized in that, A travel switch is provided on the knife seat. The travel switch is provided with a contact rod. The contact rod faces upward and is located between the guide plate and the tangent knife plate.

4. The automatic coil changing and cutting device for flat wires according to claim 1, wherein, The wire blocking roller is vertically installed on the turntable through a central shaft. The side of the wire blocking roller close to the turntable is a cylindrical section. The side of the wire blocking roller away from the turntable is a conical section. A cylindrical transition section is provided between the cylindrical section and the conical section. The outer diameter size of the cylindrical transition section is smaller than the outer diameter size of the cylindrical section. The width of the cylindrical transition section is slightly larger than the width of the flat wire.

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